They seem a bit all over the shop with these time penalty's, seeing as Vettel was out of control till he was back onto the driving line, there was nothing he could have done. And Hamilton only was impeded by having to lift off his throttle to avoid a possible accident (key word ACCIDENT) that let him close the gap between the two.
I thought that the time penalty's at Monaco were strange enough, Max gets a 5 sec penalty for unsafe release in pit lane, that's all you need is two cars coming together there with people everywhere an out of control car would make short work of, and other cars getting 10 sec penalty's for unsuccessful over takes on the race track, its hard enough to pass at Monaco as it is. may as well not pass and crash your way through the pits and gain 5 sec.
Surprised they didn't give Hamilton a time penalty in Monaco for having knackered tires and impeding the rest of the cars.
As Ron Dennis once said " Where is the consistency? its not wright"
If it had of been two other back marker cars would this penalty have been handled the same way?